Just registered to use Zoho calendar which seems great but I have problem with calendar sync to my phone. 

I have set up exchange sync to soho and I can sync my own private calendar just fine, but not shared one which I created. 

I looked up settings but can't find reason for this. 

I have basic account. Is syncing shared calendars disabled or what could be the reason?

Phone settings (Samsung Galaxy S4) are ok. 

Thx in advance,

Br,

Mikael